1 /* 2 * Common device infrastructure for devices in the virtual css 3 * 4 * Copyright 2016 IBM Corp. 5 * Author(s): Jing Liu <liujbjl@linux.vnet.ibm.com> 6 * 7 * This work is licensed under the terms of the GNU GPL, version 2 or (at 8 * your option) any later version. See the COPYING file in the top-level 9 * directory. 10 */ 11 12 #include "qemu/osdep.h" 13 #include "ccw-device.h" 14 #include "hw/qdev-properties.h" 15 #include "qemu/module.h" 16 17 static void ccw_device_refill_ids(CcwDevice *dev) 18 { 19 SubchDev *sch = dev->sch; 20 21 assert(sch); 22 23 dev->dev_id.cssid = sch->cssid; 24 dev->dev_id.ssid = sch->ssid; 25 dev->dev_id.devid = sch->devno; 26 dev->dev_id.valid = true; 27 28 dev->subch_id.cssid = sch->cssid; 29 dev->subch_id.ssid = sch->ssid; 30 dev->subch_id.devid = sch->schid; 31 dev->subch_id.valid = true; 32 } 33 34 static bool ccw_device_realize(CcwDevice *dev, Error **errp) 35 { 36 ccw_device_refill_ids(dev); 37 return true; 38 } 39 40 static Property ccw_device_properties[] = { 41 DEFINE_PROP_CSS_DEV_ID("devno", CcwDevice, devno), 42 DEFINE_PROP_CSS_DEV_ID_RO("dev_id", CcwDevice, dev_id), 43 DEFINE_PROP_CSS_DEV_ID_RO("subch_id", CcwDevice, subch_id), 44 DEFINE_PROP_END_OF_LIST(), 45 }; 46 47 static void ccw_device_reset_hold(Object *obj, ResetType type) 48 { 49 CcwDevice *ccw_dev = CCW_DEVICE(obj); 50 51 css_reset_sch(ccw_dev->sch); 52 } 53 54 static void ccw_device_class_init(ObjectClass *klass, void *data) 55 { 56 DeviceClass *dc = DEVICE_CLASS(klass); 57 CCWDeviceClass *k = CCW_DEVICE_CLASS(klass); 58 ResettableClass *rc = RESETTABLE_CLASS(klass); 59 60 k->realize = ccw_device_realize; 61 k->refill_ids = ccw_device_refill_ids; 62 device_class_set_props(dc, ccw_device_properties); 63 rc->phases.hold = ccw_device_reset_hold; 64 dc->bus_type = TYPE_VIRTUAL_CSS_BUS; 65 } 66 67 const VMStateDescription vmstate_ccw_dev = { 68 .name = "s390_ccw_dev", 69 .version_id = 1, 70 .minimum_version_id = 1, 71 .fields = (const VMStateField[]) { 72 VMSTATE_STRUCT_POINTER(sch, CcwDevice, vmstate_subch_dev, SubchDev), 73 VMSTATE_END_OF_LIST() 74 } 75 }; 76 77 static const TypeInfo ccw_device_info = { 78 .name = TYPE_CCW_DEVICE, 79 .parent = TYPE_DEVICE, 80 .instance_size = sizeof(CcwDevice), 81 .class_size = sizeof(CCWDeviceClass), 82 .class_init = ccw_device_class_init, 83 .abstract = true, 84 }; 85 86 static void ccw_device_register(void) 87 { 88 type_register_static(&ccw_device_info); 89 } 90 91 type_init(ccw_device_register) 92